8.10 Setting Up vi This section describes the following: * The :set command * Options available with :set * Example .exrc file 8.10.1 The :set Command The :set command allows you to specify options that change characteristics of your editing environment. Options may be put in the ~/.exrc file or set during a vi session. The colon should not be typed if the command is put in .exrc: :set xEnable o..